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Bell warm up 01/07/10. A nucleotide consists of: 1._____________ 2. ____________ 3._____________. Importance of DNA. Genetically engineered glowing tobacco plant. Genetically engineered glowing fish. DNA Replication. DNA Notes. DNA = Deoxyribo nucleic acid.
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Bell warm up 01/07/10 A nucleotide consists of: 1._____________ 2. ____________ 3._____________
Importance of DNA Genetically engineered glowing tobacco plant Genetically engineered glowing fish
DNA Notes • DNA = Deoxyribo nucleic acid • Made up of repeating units called nucleotides. • A nucleotide consist of ( sugar (deoxyribose), phosphates and nitrogeneous bases
Cell division and DNA replication • Cells divide Growth, Repair, Replacement • Before cells divide they have to double cell • structures, organelles and their genetic • information
Notes: • Structure was discovered in 1953 by James • Watson and Francis Crick
DNA replication DNA Replication Steps 1. DNA unwinding 2. Unzipping (hydrogen bonds break) 3. New strands made– free floating nucleotides form to build new strand Note: DNA replication is said to be Semi-conservative because: One strand is the original (conserved) One strand is freshly assembled (semi-half)
DNA replication steps unzipping DNA New nucleotides assembled
DNA replication http://www.stolaf.edu/people/giannini/flashanimat/molgenetics/dna-rna2.swf
DNA replication Let’s build our own DNA model and simulate DNA replication. http://www.phschool.com/atschool/phbio/dna_replication/index.html
DNA replication DNA Double helix game http://nobelprize.org/educational_games/medicine/dna_double_helix/
Replication Lab Pick A T C G C T (lay them on the table) Make the other side to make a double helix Now lets replicate: 3. UNWIND your DNA get teacher’s approval 4.UNZIPyour DNA Build new strands Put the labels in the correct places ( DNA polymerase, new strand, old strand)
Lab 2 • Create your own DNA with 6rungs or steps • REPLICATE • Show your teacher the end product with the lables in the correct places • Complete the given worksheet • Turn in your work as a group, clean up and go back to your seat in front